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Nitrogen-Doped Microporous Carbons Derived from Pyridine Ligand-Based Metal-Organic Complexes as High-Performance SO 2 Adsorption Sorbents.
- Source :
-
ACS applied materials & interfaces [ACS Appl Mater Interfaces] 2018 Oct 31; Vol. 10 (43), pp. 37407-37416. Date of Electronic Publication: 2018 Oct 22. - Publication Year :
- 2018
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Abstract
- Heteroatom-doped porous carbons are emerging as platforms for gas adsorption. Herein, N-doped microporous carbon (NPC) materials have been synthesized by carbonization of two pyridine ligand-based metal-organic complexes (MOCs) at high temperatures (800, 900, 1000, and 1100 °C). For NPCs (termed NPC-1- T and NPC-2- T, where T represents the carbonization temperature), the micropore is dominant, pyridinic-N and other N atoms of MOC precursors are mostly retained, and the N content reaches as high as 16.61%. They all show high Brunauer-Emmett-Teller surface area and pore volume, in particular, NPC-1-900 exhibits the highest surface areas and pore volumes, up to 1656.2 m <superscript>2</superscript> g <superscript>-1</superscript> and 1.29 cm <superscript>3</superscript> g <superscript>-1</superscript> , respectively, a high content of pyridinic-N (7.3%), and a considerable amount of SO <subscript>2</subscript> capture (118.1 mg g <superscript>-1</superscript> ). Theoretical calculation (int = ultrafine m062x) indicates that pyridinic-N acts as the leading active sites contributing to high SO <subscript>2</subscript> adsorption and that the higher content of pyridinic-N doping into the graphite carbon layer structure could change the electrostatic surface potential, as well as the local electronic density, which enhanced SO <subscript>2</subscript> absorption on carbon edge positions. The results show great potential for the preparation of microporous carbon materials from pyridine ligand-based MOCs for effective SO <subscript>2</subscript> adsorption.
Details
- Language :
- English
- ISSN :
- 1944-8252
- Volume :
- 10
- Issue :
- 43
- Database :
- MEDLINE
- Journal :
- ACS applied materials & interfaces
- Publication Type :
- Academic Journal
- Accession number :
- 30295027
- Full Text :
- https://doi.org/10.1021/acsami.8b12739